os dayton



Aug. 4, 1931. SMPLEY 1,817,770

CASH REGISTER Original Filed Jan. 19, 1924 Bclll is M. Ship! Patented Aug. 4, 1931 ITED STATES PATENT oFl-"lca WIS M. SHIPLEY, OF DAYTON, OHIO, ASSI'GNOB TO THE NATIONAL CASH REGISTER l: i COMPANY, OF DAYTON, OHIO, A CORPORATION OF MARYLAND cr b P cnsn anexsrm application flied January 19,

,7 5 I j k v This invention relates to cash registers ilike machines, and more particularly to gype} setting differential mechanisms there- One of the objects of this invention is to provide novel mechanism co-acting' with a plurality of manipulative devices and with a settable element, whereby any one ofthe' manipulative devices, when operated, differentially adjusts the settable element in either of two opposite directions, depending upon whilch of the manipulative devices is oper: ate

Another and co-related object is the provision of an automatically efiective interlock between certain at least of the manipulative devices and the mechanism operated thereby, which arrests such mechanism at a oint intermediate its extremes of travel, and revents overthrow thereof.

With these and incidental objects in view, the invention includes certain novel features (if-{construction and combinations of parts, the essential elements of which are set forth is appended claims and a preferred form or embodiment of which is hereinafter dewith reference to the drawin which accompanies and forms a part of thls specification.

The drawing shows a side view of a spe- '96 cific mechanism, illustrative of one form of this invention. 1 The invention in its preferred form, as illustrated in said drawing, is adapted to be applied to a cashregister of the type illustrated and described in Letters Patent of the United States, N 0. 1,242,170, issued to F. L. Fuller, on October 9, 1917, and in applications for Letters Patent of the United 'stptea serial Nos. 608,281 and 687,305, filed b 1 B. M. S hipley, on December 21, 1922, and anuary '19, 1924, respectively. The subject matter of this application constitutes a division of the last-mentioned ap lication.

Heretofore mechanismfor difierentially "positioning type wheels under the control of a" plurality of depressible keys has been ,wmplicated and costly to manufacture, due tothe numberof parts. It is believed that the'present invention overcomesthis, inas- 1924, .Serial No. 687,305. Divided and this application flled luly 9, 1929. Serial 110,377,013.

much as it is simple, r uires but few parts,

and operates directly rom the keys, with no other power except that applied to the 'ke s, to operate it.

a r esides amount keys and transaction keys, cash registers of the type in connection with i which the invention-is shown, are usually provided with clerks keys either to control the selection'of totalizers upon which to accumulate the total amount of the sales transacted or effected by each individual clerk, or

for the purpose of controlling the positioning of type wheels to print characters identiflyt lng the clerks, or to accomplish both' resu s. 1

v The present invention is intended to differentially set type wheels from the last positions which they occupied, to the new positlons which they are to occupy, bythe mere act of operating any one of the clerkskeys.

. These clerks keys 96 are slidablymounted m a row in a key frame 147 supported by cross rods 93 and 148, extending between suitarms of such rocker extending invopposite directions to lie in the paths of pins 153 projecting from the stems of the respective keys Although, in the form shown in the drawmg, the keys 96 are located in the'same row or bank, it may be assumed for present pur poses, that the keys are arranged in groups and adapted to operate upon the respective arms of the lever or rocker 154. r A

- To this end, the arms of the rocker or lever are each provided with a cam recess 652 located at that point on eacharmwhich lies beneath the pm 153 on the uppermost key 96 of the lower group, and the lowermost key of the upper group, when the lever is in its neutral position shown in the drawing;

Any one of the 'keys 96, when depressed, presses its key pin 153 on the stem thereof 7 against the edge of that arm of the lever 154 which lies in its path, to rock thelever 154 either clockwise or counter-clockwise, depending upon which of said keys is depressed.

A projection, as a coupling stud 156 carried on one arm of a bell crank 157 pivoted at 158 on the key frame 14:7, is embraced by the forked end of the lever 15%, and a link 160 connects the other arm of the bell crank 157 to an ear 162 fast on a tube 163 supported on a shaft 577, and carrying a type wheel 152.

The lever 15%, when rocked by depression of the key 96, swings the bell crank 157 which, through the link 160, turns the tube 163 and type wheel 152 to a position in which the character presented to the printing line corresponds with the key 96 depressed.

It is quite obvious that the types A, B, D and E on the type wheel 153 should be properly positioned on the periphery thereof, relatively to the amount of rotation imparted to the type wheel through the train of levers operated by the keys 96 which bear the corresponding indicating letters. and that key A, when depressed, will rock the lever 154 in clockwise direction, while key E, when depressed, will rock the lever counter-clockwise, the amount of depression of each key 96. and consequently the throw imparted to the lever, being limited by contact of the key pin 153 with the bottom of the usual notch formed in the customary spring-pressed detent bar 164, the hooked detents of which retain the depressed key against return to normal position.

However, with the rocker lever 154- in its neutral position, shown in the drawing, it is necessary to impart a lesser degree of travel to the rocker, than when either of keys A and E are operated, and to this end, the respective arms of the rocker lever have substantially V-shaped or flaring recesses 652 formed at points in line with the respective key pins 153 of the keys D and B, to afford a longer idle travel of the key B or D before its pin 153 contacts and operates its respective arm of the rocker lever 15 1, and since the keys 96 are all depressible to the same extent, the result is that keys B and D rock the lever 151 a shorter distance than do the keys A and E.

But, because suflicient play must be allowed for the rocker lever 15 1- to travel the greater distance under the pressure of the keys A and E, it is necessary to prevent overthrow of the rocker lever. due to intentional or accidental mismanipulation of the key B or D, as by a sharp quick and forcible depression.

To attain this result. the walls of the re cesses 652 are so formed that at the time the key B or D reaches the end of its depressible travel, the corresponding key pin 153 has seated itself at the apex of its recess 652. the divergent walls of which, by contact with the key pin. lock the rocker lever against movement in either direction.

The bell crank 157 is located on one side of the key frame 14-7, the pin 156 carried by the bell crank, extending through an opening 651 in the key frame to enter the bifurcated arm of the rocker lever 15% pivoted on the opposite side of the key frame.

Overthrow of the rocker lever 154, when operated by the keys A or E, is prevented by contact of the coupling pin 156 with one or the other end wall of the opening 651.

Hence, the proper location of the desired types relatively to the impression hammers 702 and 735, according to the keys depressed, is assured.

As the rocker lever 151, and consequently the type wheel 152, remain in the positions to which they were last adjusted, it is obvious that after an operation of the machine, during which the key B or D remained depressed, the rocker lever will be left in one of its positions between the neutral position shown in the drawing, and its extreme limit of clockwise or counter-clockwise travel.

011 the other hand. the rocker lever will remain in one or the other of its extreme positions of travel, after the depression of either of keys A or E.

As a matter of fact, although in assembling the machine the rocker lever is adjusted to the neutral position shown in the drawing, it will never again in use rest in such position after depression of the first key.

The A key 96, when depressed, will rock the lever 15s to its extreme of clockwise travel, and in so doing, will raise the lefthand arm of the lever towards the key pins 153 on the D and E keys, so that if either of the latter is depressed preliminary to the next operation of the machine, its key pin will encounter the edge of the rocker lever at a comparatively early point in its depression.

Indeed, the key pin of the key D under such conditions may contact the unreeessed edge of the rocker and shift the rocker counter clockwise, slipping into the recess, and bearing against the left-hand flaring wall thereof, until it finally seats itself at the bottom of the recess.

At the end of such operation, the rocker lever lies with the upper end of the righthand flaring wall of the upper recess 652 in line with the key pin 153 of key 13, so that should the latter key be next depressed, it can rock the lever 15 1 a sutlicient distance to position the desired type at the printing line.

Due to the multiplying leverage shown, a very slight adjustment of the rocker 154 is sutlicient to impart a comparatively extensive travel to the type wheel.

lVhilc the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form or embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming withinthe scope of the claims which follow.

What is claimed as new, is: 1. In a machine of the class described, the combination with a. group of spaced manipulative devices; and a settable element; of means operable by the group of manipulative devices to variously position the settable element and to shift it directly from one to another of its positions depending upon the manipulative device operated, by the operation of such manipulative device, including a lever; means to connect the lever and the settable element; means to arrest the lever in either of its extreme positions; and means on the lever and co-acting with certain of the manipulative means to automatically lock the lever in other of its ositions.

2. In a machine 0 the class described, the combination with oups of spaced manipulative devices; an a settable element; of a shiftable member common to the respective groups of mani ulative devices and operable t ere y in one irection or the other to variable extents depending upon the manipulative device operated; means to connect the oppositely adjustable shifta-ble device and the settable element; and means to arrest the shiftable member at either of its extremes of travel, the shiftable member adapted to 0 traverse a path which intersects the path of travel of certain of the manipulative devices and being recessed, the walls of which recesses are adapted to co-act with the associated manipulative devices to arrest the shiftable member at points intermediate its extremes of travel.

In testimony whereof I aflix my signature.

BERNIS M. SHIPLEY. 

